Just did a quick run-through at our local Target. No 50% off or clearance discount signs in or around video games, but a few games were ringing up for less than marked when taken to the price-check at the end of the aisle.
PS4: Dark Alliance (Marked $30, rang up $12)
(Brickseek is bringing up the wrong info; it brings up a different title called Yomawari Midnight Shadows? UPC is 816819018583 and DPCI is 207-34-0306.)
PS4: Trover Saves the Universe (Marked $30, rang up $9.99)
PS4: Pac-Man Championship Edition 2 (Marked $30, rang up $9.99)
XB1: Wolfenstein Youngblood Deluxe Edition (Marked $40, rang up $19.99)
XB1: World of Final Fantasy (Marked $30, rang up $0)
World of Final Fantasy was ringing up $0.00, so we took it to checkout to see what would happen. The cashier keyed in the $29.99 price on the sticker, and we made mention that it wasn't scanning for that price. She flagged over a manager, and they both scanned it a couple times before the manager said she'd let me have it for $7.98. YMMV, of course.